EP1052004A1 - Procédé et dispositif pour la concentration par évaporation accélérée de rejets aqueux - Google Patents
Procédé et dispositif pour la concentration par évaporation accélérée de rejets aqueux Download PDFInfo
- Publication number
- EP1052004A1 EP1052004A1 EP00400944A EP00400944A EP1052004A1 EP 1052004 A1 EP1052004 A1 EP 1052004A1 EP 00400944 A EP00400944 A EP 00400944A EP 00400944 A EP00400944 A EP 00400944A EP 1052004 A1 EP1052004 A1 EP 1052004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- evaporation
- enclosure
- effluent
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/343—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances the substance being a gas
- B01D3/346—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances the substance being a gas the gas being used for removing vapours, e.g. transport gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/14—Evaporating with heated gases or vapours or liquids in contact with the liquid
Definitions
- the present invention relates to a method and a device for ensure the concentration of aqueous liquids, for example by evaporation leachates of household waste and bottom ash.
- Natural evaporation is a spontaneous process of conversion of heat in latent energy at the water / air interface.
- the rate of evaporation is proportional to the surface area of the water / air interface.
- the present invention uses the concept of an evaporation module closed whose circulation of a hot evaporation gas is ensured by mechanical means, hot gas from direct use or indirect from a nearby source, biomass, burners, engine exhaust thermal, etc.
- This process can have the following advantages: efficiency practically independent of local weather conditions, a optimization of the operation of the module, washing of the exhaust gases.
- the temperature of the evaporating gas can be regulated by injecting exhaust gases from the combustion of biogas produced by waste fermentation.
- the temperature of the evaporating gas can be regulated using a heat exchanger whose heat energy comes from a cooling of combustion means of a biogas produced by waste fermentation.
- the enclosure may include means for extracting the contained gas in said enclosure, for example a fan.
- the part of the non-evaporated effluent can be recycled upstream of watering the panel.
- the invention also relates to an installation for treatment by evaporation of an aqueous effluent, comprising at least one panel alveolar watered by said effluent by means of pumping.
- the installation comprises a closed enclosure comprising an intake and an outlet of an evaporation gas in forced circulation in said enclosure.
- the panel is arranged in said enclosure between the inlet and the outlet of the gas, and said intake includes means for supplying heat energy so that said gas has a temperature between 25 ° C and 45 ° C.
- a fan can be arranged on said enclosure to perform the forced gas circulation.
- a heat engine powered by biogas can be a source of heat energy.
- An exchanger can equip said intake and said exchanger can use the heat energy of the cooling fluid of said engine thermal, whether gas or liquid.
- the heat engine can drive an energy generator electric, which can be used in particular to motorize the fan gas circulation pumps, fluid circulation pumps, valve remote controls.
- the enclosure may include means for filtering the effluent not evaporated and / or evaporation gas by catalyzed active carbon.
- reference 1 designates the entire closed module evaporation.
- a main box 2 for example of shape rectangular with a base of dimensions of approximately 12 m by 6 m and with a height of around 3 m, contains evaporation panels 3.
- the evaporation panels 3 are preferably of the type described in document FR 2717098, cited here with reference. They are located along two sides of the box, slightly inclined towards the center to receive the spraying of the liquid effluent by spray bars 4 arranged on the side evaporator gas inlet.
- References 5 and 5 designate the means evaporator gas inlet which passes through the evaporator panels sprayed with the effluent to be concentrated.
- a drop separator 6 at least one fan 7, and a gas outlet duct 8, either directly to the open air, or to a chimney, or sometimes to a purification system. Liquid effluent excess drains into the gutter 9.
- activated carbon catalyzed can be placed behind the exchange surface, inside the module so that the non-evaporated leachate percolates through the coals active and be deodorized.
- the fact of using sources close to the installation, in heat energy allowing to admit into the module a hot gas (between 25 ° and 45 ° C) and dry, allows attractive yields whatever the region or the season.
- the performances evaluated above correspond to a module closed according to the dimensions given above, at a power of 3 kW / h sprinkler pumps, and a fan diameter of 4 m developing a power of around 7.5 kW. These dimensions are not of the present invention.
- FIG. 2 describes the block diagram of the complete installation for the implementation of the method according to the invention.
- Tray 10 is intended for receive the effluent to be treated.
- the effluent can be filtered upstream or downstream of the pump 11 which transports the effluent to a storage tank 12.
- a pump 13 discharges the effluent by projecting it by spray means 4 onto the meshes of the evaporation panels 3. Thanks to the fan 7, a gas circulation is established and controlled between 5 gas admissions warm or 5 'of ambient air and outlet 8, passing through the panels where the effluent partly evaporates.
- the part of the liquid effluent not evaporated is collected by the gutter 9 and returned to the basin 12 via line 14 to be recycled in the evaporation circuit.
- a tray auxiliary 15, equipped with a pump 16 can contain a bactericide which can be used to clean the mesh of panels at regular intervals evaporation.
- the 5 admissions are schematically connected on this figure to a source 17 of hot and relatively dry gas. 5 'admissions represent inlets of ambient air. So the evaporating gas can be temperature regulated by the mixture of hot gas and ambient air.
- Figure 3A describes more precisely the heat input means to the evaporating gas at the inlet of the module so that the hot gas has a regulated temperature between 25 ° and 45 ° C approximately, that is to say in condition natural, but optimal evaporation.
- Reference 18 denotes the supply of biogas to a heat engine 19 which generally drives an electricity generator. Biogas comes from the fermentation of waste. This gas is collected by a specific installation and used as fuel in the engine 19.
- the module 1 is equipped at the intake at least one ambient air inlet 20 and a gas injector or distributor hot 21. This device is more precisely described in FIG. 4.
- the injector 21 is connected by a line 22 to the outlet of the exhaust gas 23 from the heat engine 19.
- a bypass and flow control device 24 allows to regulate the injection gas flow rate having a temperature of several hundred degrees. This regulation can be controlled by a temperature sensor installed in the module, or more simply consist in manual adjustment insofar as the invention does not necessarily require a precise temperature value, but within a relatively wide range, for example between 20 ° and 45 ° C.
- the volume of exhaust gas is mixed with the intake of module with ambient air entering through inlets 20. In addition, gases exhaust are washed by the effluent as they pass through the mesh of the evaporation panels.
- FIG. 4 illustrates an example of a gas injector or distributor.
- a pipe 25, closed at both ends, comprises a series of tubes 26 welded perpendicularly to form the teeth of a comb. These tubes 26 are perforated by a series of orifices 27 allowing the ejection of the hot gas.
- a lateral opening 28 is connected to the supply line 22 exhaust gases.
- the length of line 25 corresponds generally the length of the module and the length of the tubes 26 to the height of the closed module.
- FIG. 3B describes another variant of supply of heat energy to the evaporation gas.
- a heat engine 19 is supplied with biogas 18 and the exhaust 23 is here free.
- a cooling, air or water is essential to control the temperature of the mechanical parts of the engine.
- An external system 29 uses engine coolant as an energy source thermal sent into an exchanger 30 placed at the inlet of the so that the ambient air entering through one or other of the 20 inlets is heats up in contact with the walls of the exchanger 30.
- the pipes 31 and 32 diagram the lines of the coolant circuit respectively leaving and entering a distributor 33 which regulates the circulation of the hot fluid through other pipes 34 and 35 in the exchanger 30. Thanks to this device, the ambient air collects the heat energy supplied indirectly by the combustion of biogas in the heat engine to adjust the evaporating gas temperature.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
- Dispositif et un procédé pour concentrer par évaporation un effluent aqueux sous l'effet d'une circulation d'un gaz d'évaporation à travers au moins un panneau alvéolaire arrosé par ledit effluent.
- Selon l'invention, on effectue les étapes suivantes: on place le panneau (3) dans une enceinte fermée, on effectue dans l'enceinte une circulation forcée du gaz d'évaporation entre des moyens d'admission (5,5') et de sortie du gaz (8), le panneau étant intercalé entre l'admission et la sortie de façon que le gaz passe à travers le panneau (3), on équipe les moyens d'admission (5,5') de moyens d'apport d'énergie calorifique de façon que le gaz ait une température comprise entre environ 25°C et 45°C.
Description
- on place le panneau dans une enceinte fermée,
- on effectue dans l'enceinte une circulation forcée du gaz d'évaporation entre des moyens d'admission et de sortie du gaz, le panneau étant intercalé entre l'admission et la sortie de façon que le gaz passe à travers le panneau,
- on équipe les moyens d'admission de moyens d'apport d'énergie calorifique de façon que le gaz ait une température comprise entre environ 25°C et 45°C.
- La figure 1 décrit un module fermé d'évaporation accélérée.
- La figure 2 illustre le schéma de principe de fonctionnement du procédé selon l'invention.
- Les figures 3A et 3B décrivent la réalisation de deux moyens d'apport d'énergie calorifique au gaz d'évaporation.
- La figure 4 représente un exemple de réalisation d'un distributeur de gaz chaud.
- à Nímes: 2200 m3/an;
- à Besançon: 900 m3/an;
- à Paris: 1200 m3/an.
- Il permet de réguler, par apport d'énergie calorifique, l'évapo-concentration naturelle des effluents, tout en restant dans les normes de l'évaporation naturelle traditionnelle;
- Il permet également de laver des gaz d'échappement tout en utilisant l'énergie calorifique qu'ils produisent.
Claims (13)
- Procédé pour concentrer par évaporation un effluent aqueux sous l'effet d'une circulation d'un gaz d'évaporation à travers au moins un panneau alvéolaire (3) arrosé par ledit effluent, dans lequel on effectue les étapes suivantes:on place ledit panneau (3) dans une enceinte fermée (2),on effectue dans ladite enceinte une circulation forcée dudit gaz d'évaporation entre des moyens d'admission (5, 5') et de sortie (8) du gaz, ledit panneau étant intercalé entre l'admission et la sortie de façon que ledit gaz passe à travers ledit panneau,on équipe lesdits moyens d'admission de moyens d'apport d'énergie calorifique (21, 30) de façon que ledit gaz ait une température comprise entre environ 25°C et 45°C.
- Procédé selon la revendication 1, dans lequel on régule la température du gaz d'évaporation en injectant du gaz d'échappement provenant de la combustion d'un biogaz produit par fermentation de déchets.
- Procédé selon la revendication 1, dans lequel on régule la température du gaz d'évaporation utilisant un échangeur thermique (30) dont l'énergie calorifique provient d'un fluide de refroidissement de moyens de combustion d'un biogaz produit par fermentation de déchets.
- Procédé selon l'une des revendications précédentes, dans lequel ladite enceinte comporte des moyens d'aspiration (7) du gaz contenu dans ladite enceinte, par exemple un ventilateur.
- Procédé selon l'une des revendications précédentes, dans lequel on filtre sur des charbons actifs catalysés l'effluent et/ou le gaz d'évaporation.
- Procédé selon l'une des revendications précédentes, dans lequel la partie de l'effluent non évaporé est recyclée en amont de l'arrosage du panneau.
- Installation de traitement par évaporation d'un effluent aqueux, comportant au moins un panneau alvéolaire (3) arrosé par ledit effluent grâce à des moyens de pompage (13), caractérisée en ce qu'une enceinte fermée (2) comprend une admission (5, 5') et une sortie (8) d'un gaz d'évaporation en circulation forcée dans ladite enceinte, en ce que ledit panneau est disposé dans ladite enceinte entre l'admission et la sortie du gaz, en ce que ladite admission comporte des moyens d'apport d'énergie calorifique (21, 30) de façon que ledit gaz ait une température comprise entre 25°C et 45°C.
- Installation selon la revendication 7, dans laquelle un ventilateur (7) disposé sur ladite enceinte effectue la circulation forcée du gaz.
- Installation selon l'une des revendications 7 ou 8, dans laquelle un moteur thermique (19) alimenté par du biogaz est une source de l'énergie calorifique.
- Installation selon la revendication 9, dans laquelle les gaz d'échappement dudit moteur thermique sont injectés dans ladite admission de gaz.
- Installation selon la revendication 9, dans laquelle un échangeur équipe ladite admission et en ce que ledit échangeur utilise l'énergie calorifique du fluide de refroidissement dudit moteur thermique, qu'il soit gaz ou liquide.
- Installation selon l'une des revendications 9 à 11, dans laquelle ledit moteur thermique entraíne un générateur d'énergie électrique, laquelle est notamment utilisée pour motoriser le ventilateur de circulation de gaz, les pompes de circulation de fluides, les télécommandes de vannes.
- Installation selon l'une des revendications 7 à 12, dans laquelle ladite enceinte comprend des moyens de filtration de l'effluent non évaporé et/ou du gaz d'évaporation par des charbons actifs catalysés.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9906145 | 1999-05-12 | ||
FR9906145A FR2793423B1 (fr) | 1999-05-12 | 1999-05-12 | Procede et dispositif pour la concentration par evaporation acceleree de rejets aqueux |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1052004A1 true EP1052004A1 (fr) | 2000-11-15 |
EP1052004A8 EP1052004A8 (fr) | 2003-06-25 |
EP1052004B1 EP1052004B1 (fr) | 2006-06-14 |
Family
ID=9545581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00400944A Expired - Lifetime EP1052004B1 (fr) | 1999-05-12 | 2000-04-06 | Procédé et dispositif pour la concentration par évaporation accélérée de rejets aqueux |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1052004B1 (fr) |
AT (1) | ATE329671T1 (fr) |
DE (1) | DE60028653D1 (fr) |
ES (1) | ES2265888T3 (fr) |
FR (1) | FR2793423B1 (fr) |
PT (1) | PT1052004E (fr) |
ZA (1) | ZA200002235B (fr) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB658286A (en) * | 1948-07-28 | 1951-10-03 | Norman Swindin | An improved method for the evaporation or concentration of liquids |
FR2298359A1 (fr) * | 1975-01-23 | 1976-08-20 | Bertin & Cie | Procede et appareil de mise en contact d'un gaz et d'un liquide |
US4104112A (en) * | 1973-10-17 | 1978-08-01 | Niagara Blower Company | Method and apparatus for concentrating aqueous solutions |
DE2706430A1 (de) * | 1977-02-16 | 1978-08-17 | Loren George Kragh | Verfahren und vorrichtung zum entfernen von geloesten feststoffen aus waesserigen loesungen |
WO1983004185A1 (fr) * | 1982-06-04 | 1983-12-08 | Vico Kemisk Tekniska Fabrik Ab | Appareil de purification |
GB2143144A (en) * | 1983-07-13 | 1985-02-06 | Yoshimi Oshitari | Waste liquid evaporation apparatus |
JPS61274701A (ja) * | 1985-05-30 | 1986-12-04 | Kenichi Nakagawa | 多成分液の濃縮法 |
WO1998023349A1 (fr) * | 1996-11-27 | 1998-06-04 | Albert Van Duijn | Procede et appareil permettant d'amener un gaz et un liquide en contact l'un avec l'autre |
-
1999
- 1999-05-12 FR FR9906145A patent/FR2793423B1/fr not_active Expired - Fee Related
-
2000
- 2000-04-06 DE DE60028653T patent/DE60028653D1/de not_active Expired - Lifetime
- 2000-04-06 EP EP00400944A patent/EP1052004B1/fr not_active Expired - Lifetime
- 2000-04-06 PT PT00400944T patent/PT1052004E/pt unknown
- 2000-04-06 AT AT00400944T patent/ATE329671T1/de not_active IP Right Cessation
- 2000-04-06 ES ES00400944T patent/ES2265888T3/es not_active Expired - Lifetime
- 2000-05-08 ZA ZA200002235A patent/ZA200002235B/xx unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB658286A (en) * | 1948-07-28 | 1951-10-03 | Norman Swindin | An improved method for the evaporation or concentration of liquids |
US4104112A (en) * | 1973-10-17 | 1978-08-01 | Niagara Blower Company | Method and apparatus for concentrating aqueous solutions |
FR2298359A1 (fr) * | 1975-01-23 | 1976-08-20 | Bertin & Cie | Procede et appareil de mise en contact d'un gaz et d'un liquide |
DE2706430A1 (de) * | 1977-02-16 | 1978-08-17 | Loren George Kragh | Verfahren und vorrichtung zum entfernen von geloesten feststoffen aus waesserigen loesungen |
WO1983004185A1 (fr) * | 1982-06-04 | 1983-12-08 | Vico Kemisk Tekniska Fabrik Ab | Appareil de purification |
GB2143144A (en) * | 1983-07-13 | 1985-02-06 | Yoshimi Oshitari | Waste liquid evaporation apparatus |
JPS61274701A (ja) * | 1985-05-30 | 1986-12-04 | Kenichi Nakagawa | 多成分液の濃縮法 |
WO1998023349A1 (fr) * | 1996-11-27 | 1998-06-04 | Albert Van Duijn | Procede et appareil permettant d'amener un gaz et un liquide en contact l'un avec l'autre |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 136 (C - 419) 30 April 1987 (1987-04-30) * |
Also Published As
Publication number | Publication date |
---|---|
DE60028653D1 (de) | 2006-07-27 |
ZA200002235B (en) | 2001-11-08 |
ES2265888T3 (es) | 2007-03-01 |
EP1052004B1 (fr) | 2006-06-14 |
ATE329671T1 (de) | 2006-07-15 |
PT1052004E (pt) | 2006-10-31 |
FR2793423A1 (fr) | 2000-11-17 |
EP1052004A8 (fr) | 2003-06-25 |
FR2793423B1 (fr) | 2002-03-22 |
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